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Method for purifying gibberellin GA3 and preparing water-soluble pulvis of gibberellin GA3

A technology of water-soluble powder and gibberellin, applied in botany equipment and methods, biocides, animal repellants, etc., can solve the problems of increasing product size, reducing dissolution rate, increasing production cost, etc., and achieves easy precipitation, Easy to use, fine and uniform purity effect

Inactive Publication Date: 2013-09-18
JIANGXI LIFENG BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the CN2010020224 patent, steps such as granulation and tabletting are required, which increases the cost of preparation, and the increase in product size reduces the dissolution rate. The primary driving force for the dissolution of granules and tablets is the dispersion formed by the hydrolysis of the effervescent agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add water 2 Kg, tetrahydrofuran 2 Kg and ethyl acetate 4 Kg successively in 10 L reactor, stir for ten minutes, make each component mix evenly, drop into crystalline powder crude product 500 g, crude product purity (GA 3 content) to 78%, heated up to 35~40 ℃ to dissolve completely, added 0.5 g of activated carbon, kept stirring for 30 minutes, and filtered with suction. The jacket temperature is controlled at 65°C, the cooling rate is 8°C / hour, the stirring rate is 200 rpm, concentrated to 5% of the mother liquor volume, and gibberellin GA is separated out 3 Crystallized, separated and dried to obtain gibberellin GA 3 The original powder is 382 g, the powder purity is 99%, and the rate of crystal size passing through a 300-mesh sieve reaches 98%.

Embodiment 2

[0021] Add the purified gibberellin GA in turn to the mixer 3 30 g of raw powder, 15 g of sodium silicate, 40 g of sodium dihydrogen phosphate, 8 g of domiphene, 5 g of sugar and 2 g of vitamin C, stirred for 30 min to mix all components evenly, and dried the obtained mixture at 50 °C , bagged, to get gibberellin GA 3 Water-soluble powder. After testing, the suspension rate is above 97%, and the wetting time is less than 30 s, meeting the quality standards of water-soluble powder.

Embodiment 3

[0023] Add the purified gibberellin GA in turn to the mixer 3 20 g of raw powder, 20 g of sodium silicate, 45 g of sodium dihydrogen phosphate, 8 g of domiphene, 5 g of sugar and 2 g of vitamin C, stirred for 30 min to mix all components evenly, and dried the obtained mixture at 50 °C , bagged, to get gibberellin GA 3 Water-soluble powder. After testing, the suspension rate is above 98%, and the wetting time is less than 30 s, meeting the quality standard of water-soluble powder.

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Abstract

The invention provides a method for purifying gibberellin GA3 and preparing water-soluble pulvis of gibberellin GA3. The invention brings forward control of purity and particle size of gibberellin GA3 and utilization of complex formulation to prepare water-soluble pulvis of gibberellin GA3. According to the invention, a mixed solvent of tetrahydrofuran / ethyl acetate / water is used for recrystallization of a crude product of gibberellin GA3, which enables a reasonable process and simple operation and enables purity of the product in one operation to be more than 98.5% and yield of the product to be more than 90%; the technology of complex formulation is employed and gibberellin GA3 is made to be rapidly dissolved in a water phase and to form a stable disperse phase through using of accessories like an acidic buffer reagent, a dispersant and a surfactant, thereby enabling gibberellin GA3 to be easier to store and transport and more convenient to use and drug effects and the utilization rate to be improved.

Description

technical field [0001] The invention relates to a plant growth regulator gibberellin GA 3 Purification and compounding to form gibberellin GA 3 Water-soluble powder method. Background technique [0002] Gibberellin is a broad-spectrum plant growth regulator and one of the five major plant hormones. It is mainly used to promote the formation of fruit setting or seedless fruit of melon and fruit plants, promote the growth of vegetative bodies of leafy vegetable plants, break the dormancy of plant seeds, promote seed development, delay the aging of fruits, and play a role in preserving freshness. When producing hybrid rice seeds, it can adjust the flowering period, promote the earing of the parents of the seed production, increase the number of effective ears and grains, and significantly increase the seed setting rate. From the perspective of physiological effects and application effects, gibberellin, as a plant growth regulator, is one of the GA 3 produced a significant e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/12A01N25/14A01P21/00
Inventor 周荣飞安顺永
Owner JIANGXI LIFENG BIOLOGICAL TECH
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